OMG, do you think that the new ROM is being mapped over RAM?, I'm busted then...
My A600 has indeed 2MB chip and a Furia accelerator; so plenty RAM here :-(
I've never thought about this subject, I'll need to check carefully how it's mapping the RAM right now.
It's being mapped into exactly the same space as the original ROM. Unless you've done modification to your motherboard, it can't be mapped anywhere else.